adjective

1. greedy in eating; devouring or eager to devour large quantities of food; ravenous; gluttonous
2. very greedy or eager in some desire or pursuit; insatiable a voracious reader

Etymology: L vorax (gen. voracis), greedy to devour < vorare, to devour < IE base *gwer-, to devour, gorge > Gr bora, food (of carnivorous beasts), L gurges, gorge